Self-adjusting Tideminder balls protect boat and lines
Protect your dock and mooring lines against fouling and chafing and eliminate the need to adjust lines during storms and tidal changes. Simply thread dock line up to 1"dia. through the Tideminder balls, secure with figure 8 knots to any size piling. The 3" x 2 3/4" balls move up and down with your boat delivering constant tension and shock absorption. Package of 9 balls.